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[1]冯 杰,赵 勇,王尚民,等.空心阴极放电振荡的频谱分析试验[J].火箭推进,2021,47(03):83-89.
　FENG Jie,ZHAO Yong,WANG Shangmin,et al.Experimental study of spectrum analysis on discharge oscillation for hollow cathode[J].Journal of Rocket Propulsion,2021,47(03):83-89.
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空心阴极放电振荡的频谱分析试验

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 47 期数: 2021年03期 页码: 83-89 栏目: 研究与设计 出版日期: 2021-06-30
Title:
Experimental study of spectrum analysis on discharge oscillation for hollow cathode
文章编号:
1672-9374(2021)03-0083-07
作者:
冯 杰; 赵 勇; 王尚民; 刘 超; 岳士超; 贾艳辉
兰州空间技术物理研究所 真空技术与物理重点实验室,甘肃 兰州 730000
Author(s):
FENG Jie; ZHAO Yong; WANG Shangmin; LIU Chao; YUE Shichao; JIA Yanhui
Science and Technology on Vacuum Technology and Physics Laboratory,Lanzhou Institute of Physics,Lanzhou 730000,China
关键词:
空心阴极;  放电振荡;  频谱分析;  FFT
Keywords:
hollow cathode;  discharge oscillation;  spectrum analysis;  FFT
分类号:
TG146.1
文献标志码:
A
摘要:
目前针对空心阴极的大批次组件级性能测试多采用金属阳极结构,与空心阴极实际工作时采用正离子束流作为阳极的情况存在差异。为验证分别以金属电极和正离子束流作为阳极时空心阴极放电特性的差别,设计对比试验,分别对两种情况下的空心阴极的放电特性、振荡特性以及频率特性进行了分析。试验结果及FFT分析表明采用正离子束作为阳极时,阴极在2～12 MHz之间将会出现多个相关的频率分量; 采用金属阳极时,空心阴极放电稳定性与供气流量密切相关; 当供气流量大于羽状模式转换阈值时,FFT分析未发现相关频谱分量,当供气流量小于转换阈值时,放电电压将在17 MHz处出现振荡分量,增大供气流量可有效的消除该分量。研究结果为空心阴极的筛选试验改进提供了理论依据。
Abstract:
At present,the large-batch module-level performance test for hollow cathodes mostly adopts metal anode structure,which is different from the situation that the hollow cathode uses positive ion beam as the anode in actual work.In order to verify the difference in the discharge characteristics of the hollow cathode when the metal electrode and the positive ion beam are used as the anode,a comparative experiment was designed,and the discharge characteristics,oscillation characteristics and frequency characteristics of the hollow cathode were analyzed in two cases.The test results and FFT analysis show that when the positive ion beam was used as the anode,the cathode will have multiple relevant frequency components between 2 MHz and 12 MHz; when the metal anode was used,the discharge stability of the hollow cathode is closely related to the gas flow.When the air flow is greater than the plume mode switching threshold,FFT analysis does not find the relevant spectral components.When the air supply flow is less than the switching threshold,the discharge voltage will have an oscillating component at 17 MHz.Increasing the air supply flow can effectively eliminate this component.The research results provide a theoretical basis for the improvement of the hollow cathode screening test.

参考文献/References:

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备注/Memo

收稿日期：2020-09-06; 修回日期:2020-10-26
基金项目：国家自然科学基金(12005087); 国家自然科学基金青年科学基金(11702123)
作者简介：冯杰(1988—),男,硕士,研究领域为空间电推进。

更新日期/Last Update: 1900-01-01